添加项目文件。

AIStudio.Wpf.ADiagram/Demos/Flowchart/ViewModels/FlowNode.cs

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+using AIStudio.Wpf.ADiagram.Helpers;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using Util.DiagramDesigner;
+
+namespace AIStudio.Wpf.ADiagram.Demos.Flowchart
+{
+    public class FlowNode : DesignerItemViewModelBase
+    {
+        public FlowNode(NodeKinds kind) : base()
+        {
+            Kind = kind;
+            Text = Kind.GetDescription();
+            ShowText = true;
+            ItemWidth = 80;
+            ItemHeight = 40;
+
+        }
+
+        public FlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+
+        protected override void Init()
+        {
+            base.Init();
+
+            ShowRotate = false;
+        }
+
+        protected override void LoadDesignerItemViewModel(IDiagramViewModel parent, SelectableDesignerItemBase designerbase)
+        {
+            base.LoadDesignerItemViewModel(parent, designerbase);
+
+            FlowNodeDesignerItem designer = designerbase as FlowNodeDesignerItem;
+            this.Color = designer.Color;
+            this.Kind = designer.Kind;
+            this.StateImage = designer.StateImage;
+
+            if (this is MiddleFlowNode middle)
+            {
+                middle.UserIds = designer.UserIds;
+                middle.RoleIds = designer.RoleIds;
+                middle.ActType = designer.ActType;
+            }
+        }
+
+        private string _color;
+        [Browsable(true)]
+        public string Color
+        {
+            get { return _color; }
+            set
+            {
+                SetProperty(ref _color, value);
+            }
+        }
+
+        [Browsable(false)]
+        public NodeKinds Kind { get; set; }
+
+        [Browsable(false)]
+        public string StateImage { get; set; }
+    }
+
+    public class StartFlowNode : FlowNode
+    {
+        public StartFlowNode() : base(NodeKinds.Start)
+        {
+
+        }
+
+        public StartFlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+    }
+
+    public class EndFlowNode : FlowNode
+    {
+        public EndFlowNode() : base(NodeKinds.End)
+        {
+
+        }
+
+        public EndFlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+    }
+
+    public class DecideFlowNode : FlowNode
+    {
+        public DecideFlowNode() : base(NodeKinds.Decide)
+        {
+
+        }
+
+        public DecideFlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+    }
+
+    public class COBeginFlowNode : FlowNode
+    {
+        public COBeginFlowNode() : base(NodeKinds.COBegin)
+        {
+
+        }
+
+        public COBeginFlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+    }
+
+    public class COEndFlowNode : FlowNode
+    {
+        public COEndFlowNode() : base(NodeKinds.COEnd)
+        {
+
+        }
+
+        public COEndFlowNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
+        {
+
+        }
+    }
+}